Gas-engine cylinder.



Patented Oct. 7, I902.

H. E. EBBS.

GAS ENGINE CYLINDER.

umion filed m 20, 1902.)

(No Model.)

me now; ums co, FHOT-J-LITNG wasnmcnm c c barren STATES PATENT rrrcn.

HERMANN EDGAR EBBS, OF NUREHBERG, GERMANY, ASSIGNOR TO VER- EINIGTEMASOHINENFABRIK AUGSBURG UND MASCHINENBAUGESELL- SCHAFT NURNBERG A. G.,OF NUREMBERG, GERMANY.

GAS-ENGlNE CYLlNDER.

SPEGIFIGATION forming part of Letters Fatent No. 710,911, dated October'7, 1902. Application filed May 29,1902. ScrialN0.109,462. (No model.

To all whom, it rim/y concern.-

lie it known that I, HERMANN EDGAR EBBS, a subject of the King of GreatBritain, residing at Nuremberg, Bavaria, Germany, have invented anImprovementin Gas-Engine Cylinders, of which the following is aspecificalion.

In the form of gasengine in which the exhaust-gases escape throughnotches, slots, or the like formed in the cylinder-wall, as is the case,for instance, in the two-stroke engines of Clerk, Oechelhauser, andKin-ting, the drawback has been found that as a rule the uncooled websor bars which lie between the said slots and around or between which thehot exhaust-gases of the engine pass easily crack by reason of the greatheating produced by these waste gases. As, further, these bars areexposed to great strains, owing to the tractile force arising in theengine, they make the working of the gas-engine insecure and render areplacement of the entire cylinder necessary whenever such cracks arise.

Now the present invention has for its ob- 2 ject to avoid too great aheating of the bars by animproved arrangement, on the onehand, and, onthe other hand, to render unnecessary the renewal of the entire cylinderin case cracks should develop. For this object the 50 part of thecylinder containing the notches or slots is formed of a separateinserted piece which contains the annular exhaust-passage and isprovided with cooling-chambers traversed by water in such a way thateach bar 1y- 5 ing between two adjacent apertures is cooled separately,and therefore a great heating of the bars by the waste gases of theengine can no longer take place. If, however, this annular piece shouldbe damaged, it can be changed or replaced without rendering necessarythe renewal of the entire cylinder.

This'iniproved gas-engine cylinder is shown in the accompanyingdrawings.

Figure l is a longitudinal sectional View on lines B B of Fig. 2, andFig. 2 is a transverse sectional View on line A A of Fig. 1.

A separate annular intermediate piece 0 is arranged between the twoparts a and I) of the cylinder, the internal diameter of the part cexactly corresponding to that of the bore of the cylinder. The saidintermediate piece contains the annular exhaust passage d, which isconnected with the interior of the cylinder by radial slots 6,distributed uniformly over the entire periphery, and from which thewaste gases of the engine are con- Yeyed away through the pipe-socket f.

The wall of the intermediate piece 0 is traversed on all sides bycooling passages through which water flows, which passages consist of anannular space g in the outer wall of the intermediate piece and passagesi, lying in the inner wallthat is to say, traversing the bars 7L in anaxial directionand annular side passages k, connecting the passages gand 'L' with one another. The water admitted at a suitable point intothis cooling-chamber flows around the radial slots 6, through which thehot gases escape from the cylinder, so that a strong heating of the barssituated between the slots can no longer take place. Should theintermediate piece become damaged, it may be taken out and repaired orreplaced by a fresh one by loosening the screws Z,which hold theintermediate piece to the flanges m of the parts a and Z) of thecylinder, and pushing the latter apart.

I declare that what I claim is- A removable insertion forengine-cylinders havingexhaust-slotsforcarryingofifthewaste 8o gases,comprising an outer casing, coolingpassages in said casing, an annularexhaustpassage, slots through the inner wall of said insertioncommunicating with the interior of the cylinder and the annularexhaust-passage, a discharge-socket for the exhaust-gasescommunicatingwith the annular exhaust-passage, and cooling-passages inthe outer wall of the insertion, in the bars between the innerexhaust-slots, and extending radially be- 0 tween said inner and outercooling-passages, substantially as and for the objects set forth. Inwitness whereof I have hereunto set my hand in presence of twowitnesses.

. HERMANN EDGAR EBBS.

Witnesses:

ED. THOFEBRU, Lnononn RAscH.

